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If 2% of the calls received by schools switchboard are wrong numbers. Find the probability that among 210 calls received by schools switchboard, 4 will be wrong numbers.
a). Determine in this case whether the conditions for the Poisson approximation to the Binomial distribution are satisfied.
b). If so, please use the Poisson approximation to the binomial distribution to find the probability.
Find the probabilities exactly one heart appears in my hand (of 13 cards); at least 7 cards from a single suit appear in my hand;
approximately 10 of the glass coming off a production line have serious flaws in the glass. if two bottles are randomly
Suppose that your friend cannot observe the effort level of the band. Explain why the full- information contract is not incentive compatible. Why is this called moral hazard?
Construct a scatterplot of the number of AIDS cases versus the number of syphilis cases. Compute the correlation between the number of AIDS cases and the number of syphilis cases.
Develop a forecast of enrollment next semester using exponential smoothing with a a= 0.2. Assume that an initial forecast for the first semester was 120 (so the forecast and the actual were the same.)
Given what you've learned in this module about the meaning of "statistics", choose one of the examples from Part I (A-F), and raise a relevant question of your own that could be answered by a statistician.
you are asked to determine whether or not brunette students have a higher iq score than other students. to do so you
According to Catalyst, 14.3% executive positions in Fortune 500 companies are occupied by women in 2012. A random sample of 180 Fortune 500 executives was selected. What is the probability that 20% or less of this sample were women?
Victor Anderson, the owner of Anderson Belts, Inc., is studying absenteeism among his employees. His workforce is small, consisting of only five employees. Determine a typical seasonal index for each of the four quarters
A fair coin was flipped three times and landed heads three times. What is the probability of a head on the next toss?
a normal distribution has a mean of m 80 with s 20. what score separates the lowest 30 of the distribution from the
in exercises 9.55-9.60 we have given the value obtained for the test statistic z in one mean z-test. we have also
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